[Session] 세션 하나의 정보를 가져올 수 있는 유즈케이스 구현

core/data/src/main/assets/sessions.json

@@ -1,5 +1,6 @@
 [
   {
+    "id": "1",
     "title": "Keynote",
     "content": [],
     "speakers": [],
@@ -12,6 +13,7 @@
     "endTime": "2023-09-12T13:20:00.000"
   },
   {
+    "id": "2",
     "title": "Jetpack Compose로 Android UI 개발하기",
     "content": [
       "Jetpack Compose는 네이티브 UI를 빌드하기 위한 Android의 최신 권장 도구 키트입니다."

core/data/src/main/java/com/droidknights/app2023/core/data/api/model/SessionResponse.kt

@@ -5,6 +5,7 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 internal data class SessionResponse(
+    val id: String,
     val title: String,
     val content: List<String>,
     val speakers: List<SpeakerResponse>,

core/data/src/main/java/com/droidknights/app2023/core/data/mapper/SessionMapper.kt

@@ -11,6 +11,7 @@ import com.droidknights.app2023.core.model.Speaker
 import com.droidknights.app2023.core.model.Tag
 
 internal fun SessionResponse.toData(): Session = Session(
+    id  = this.id,
     title = this.title,
     content = this.content,
     speakers = this.speakers.map { it.toData() },

core/data/src/main/java/com/droidknights/app2023/core/data/repository/DefaultSessionRepository.kt

@@ -8,8 +8,20 @@ import javax.inject.Inject
 internal class DefaultSessionRepository @Inject constructor(
     private val githubRawApi: GithubRawApi,
 ) : SessionRepository {
+    private var cachedSessions: List<Session> = emptyList()
 
     override suspend fun getSessions(): List<Session> {
-        return githubRawApi.getSessions().map { it.toData() }
+        return githubRawApi.getSessions()
+            .map { it.toData() }
+            .also { cachedSessions = it }
+    }
+
+    override suspend fun getSession(sessionId: String): Session {
+        val cachedSession = cachedSessions.find { it.id == sessionId }
+        if (cachedSession != null) {
+            return cachedSession
+        }
+        return getSessions().find { it.id == sessionId }
+            ?: throw IllegalStateException("Session not found with id: $sessionId")
     }
 }

core/data/src/main/java/com/droidknights/app2023/core/data/repository/SessionRepository.kt

@@ -5,4 +5,6 @@ import com.droidknights.app2023.core.model.Session
 interface SessionRepository {
 
     suspend fun getSessions(): List<Session>
+
+    suspend fun getSession(sessionId: String): Session
 }

core/data/src/test/java/com/droidknights/app2023/core/data/repository/DefaultSessionRepositoryTest.kt

@@ -19,6 +19,7 @@ internal class DefaultSessionRepositoryTest : StringSpec() {
         "역직렬화 테스트" {
             val expected = listOf(
                 Session(
+                    id = "1",
                     title = "Keynote",
                     content = listOf(),
                     speakers = listOf(),
@@ -29,6 +30,7 @@ internal class DefaultSessionRepositoryTest : StringSpec() {
                     endTime = LocalDateTime(2023, 9, 12, 13, 20),
                 ),
                 Session(
+                    id = "2",
                     title = "Jetpack Compose로 Android UI 개발하기",
                     content = listOf("Jetpack Compose는 네이티브 UI를 빌드하기 위한 Android의 최신 권장 도구 키트입니다."),
                     speakers = listOf(

core/domain/src/main/java/com/droidknights/app2023/core/domain/usecase/GetSessionUseCase.kt

@@ -0,0 +1,16 @@
+package com.droidknights.app2023.core.domain.usecase
+
+import com.droidknights.app2023.core.data.repository.SessionRepository
+import com.droidknights.app2023.core.model.Session
+import javax.inject.Inject
+
+class GetSessionUseCase @Inject constructor(
+    private val sessionRepository: SessionRepository,
+) {
+
+    suspend operator fun invoke(sessionId: String): Session {
+        // TODO: Session 데이터 연결 후 제거
+        return GetSessionsUseCase(sessionRepository).invoke().first { it.id == sessionId }
+        return sessionRepository.getSession(sessionId)
+    }
+}

core/domain/src/main/java/com/droidknights/app2023/core/domain/usecase/GetSessionsUseCase.kt

@@ -19,6 +19,7 @@ class GetSessionsUseCase @Inject constructor(
     suspend operator fun invoke(): List<Session> {
         return listOf(
             Session(
+                id = "1",
                 title = "Jetpack Compose에 있는 것, 없는 것",
                 content = emptyList(),
                 speakers = listOf(
@@ -36,6 +37,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK1,
             ),
             Session(
+                id = "2",
                 title = "Asynchronous Programming for Android",
                 content = emptyList(),
                 speakers = listOf(
@@ -57,6 +59,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK1,
             ),
             Session(
+                id = "3",
                 title = "안드로이드 앱에서 Koin걷어내고 Hilt로 마이그레이션하기",
                 content = emptyList(),
                 speakers = listOf(
@@ -74,6 +77,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK2,
             ),
             Session(
+                id = "4",
                 title = "Asynchronous Programming for Android",
                 content = emptyList(),
                 speakers = listOf(
@@ -91,6 +95,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK2,
             ),
             Session(
+                id = "5",
                 title = "안드로이드 앱에서 Koin걷어내고 Hilt로 마이그레이션하기",
                 content = emptyList(),
                 speakers = listOf(
@@ -108,6 +113,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK3,
             ),
             Session(
+                id = "6",
                 title = "Asynchronous Programming for Android",
                 content = emptyList(),
                 speakers = listOf(
@@ -125,6 +131,7 @@ class GetSessionsUseCase @Inject constructor(
                 room = Room.TRACK3,
             ),
             Session(
+                id = "7",
                 title = "Asynchronous Programming for Android",
                 content = emptyList(),
                 speakers = listOf(

core/model/src/main/java/com/droidknights/app2023/core/model/Session.kt

@@ -3,6 +3,7 @@ package com.droidknights.app2023.core.model
 import kotlinx.datetime.LocalDateTime
 
 data class Session(
+    val id: String,
     val title: String,
     val content: List<String>,
     val speakers: List<Speaker>,

feature/main/src/main/java/com/droidknights/app2023/feature/main/MainScreen.kt

@@ -76,7 +76,7 @@ internal fun MainScreen(navigator: MainNavigator = rememberMainNavigator()) {
 
                     sessionNavGraph(
                         onBackClick = { navigator.popBackStack() },
-                        onSessionClick = { navigator.navigateSessionDetail("TODO") }
+                        onSessionClick = { navigator.navigateSessionDetail(it.id) }
                     )
 
                     composable("temp") { content("temp") }

feature/session/src/main/java/com/droidknights/app2023/feature/session/SessionCard.kt

@@ -143,6 +143,7 @@ private val CardContentPadding =
 @Composable
 private fun SessionCardPreview() {
     val fakeSession = Session(
+        id = "1",
         title = "Jetpack Compose에 있는 것, 없는 것",
         content = emptyList(),
         speakers = listOf(

feature/session/src/main/java/com/droidknights/app2023/feature/session/SessionState.kt

@@ -30,7 +30,7 @@ data class SessionState(
         .groupBy { it.room }
         .map { (room, sessions) -> SessionGroup(room, sessions) }
 
-    val rooms: List<Room> = sessions.map { it.room }
+    val rooms: List<Room> = sessions.map { it.room }.distinct()
 
     private val roomPositions: Map<Room, Int> = buildMap {
         var position = 0